OAS Pension Calculator Canada 2026

Estimate your monthly Old Age Security pension based on age, residency, and deferral options. Calculate OAS clawback thresholds for Canadian seniors.

Key Takeaways

  • Full OAS requires 40 years of Canadian residency after age 18; partial pension available with 10+ years.
  • Deferring OAS to age 70 increases your monthly payment by up to 36% permanently.
  • The clawback reduces OAS by 15 cents for every dollar of net income above the threshold.
  • Seniors 75+ receive an automatic 10% increase to their OAS pension.

Understanding Old Age Security (OAS) in Canada

Old Age Security (OAS) is a monthly pension available to most Canadians aged 65 and older. Unlike the CPP, OAS is not based on your employment contributions — it is funded from general tax revenues and based primarily on how long you have lived in Canada after age 18. For many retirees, OAS is a significant component of their retirement income, especially when combined with CPP and personal savings.

However, OAS comes with an important catch for higher-income retirees: the OAS recovery tax, commonly called the "clawback." When your individual net income exceeds a certain threshold in a given year, you must repay part or all of your OAS through an additional tax. Understanding where you stand relative to the clawback threshold is critical for retirement income planning and tax-efficient withdrawal strategies.

How It Works

This calculator estimates your monthly OAS pension based on your age, years of Canadian residency after age 18, and expected income. To qualify for a full OAS pension, you generally need 40 years of Canadian residency after age 18. If you have between 10 and 39 years of residency, you receive a partial pension calculated as the number of qualifying years divided by 40.

Enter your residency details and projected retirement income to see your estimated OAS payment and whether the clawback applies. The calculator also models the effect of deferring OAS beyond age 65 — you can delay your pension by up to 5 years (to age 70) and receive a 0.6% increase for each month of deferral, resulting in up to 36% more per month. This deferral can be particularly valuable if your income will be lower in later years or if you want to maximize your guaranteed lifetime income.

OAS Clawback Strategies

The OAS recovery tax (clawback) affects retirees whose net income exceeds the annual threshold. For every dollar above the threshold, 15 cents of OAS is repaid. This creates an effective marginal tax rate spike in the clawback zone — your combined marginal rate can exceed 50% when you add the 15% clawback to your regular federal and provincial income tax.

Common strategies to minimize the clawback include: drawing down RRSP/RRIF balances before age 65 to reduce future mandatory minimum withdrawals; maximizing TFSA contributions (TFSA withdrawals don't count as income); splitting pension income with a spouse; timing capital gains realizations across years; and deferring OAS to age 70 if your income will be lower in later years.

OAS Deferral: When It Makes Sense

You can defer OAS from age 65 to 70, gaining 0.6% per month (7.2% per year) — a 36% increase at age 70. The breakeven point is typically around age 82-83: if you live beyond that, deferral pays off. If you expect a shorter lifespan, starting at 65 provides more total lifetime payments.

Deferral is particularly attractive if you have other income sources from 65 to 70 that would trigger the clawback. By waiting until those income sources wind down, you can collect a larger OAS amount while potentially staying below the clawback threshold. However, if you qualify for the Guaranteed Income Supplement (GIS), do not defer — you cannot receive GIS during the deferral period.

Key Facts

  • Full OAS pension requires 40 years of Canadian residency after age 18. Partial pension is available with 10 to 39 years.
  • OAS can be deferred up to age 70 for a 0.6% increase per month of deferral — up to 36% higher than starting at 65.
  • The OAS clawback (recovery tax) begins when your net income exceeds a threshold set annually by the CRA. Use the calculator above to see how your income affects your OAS.
  • OAS is fully clawed back once net income reaches approximately the maximum threshold. Both thresholds are indexed to inflation annually.
  • Seniors aged 75 and older receive a 10% increase to their OAS pension, automatically applied.
  • OAS payments are taxable income and must be reported on your tax return.
  • The Guaranteed Income Supplement (GIS) provides additional monthly payments to low-income OAS recipients and is not taxable.

FAQ

Should I defer my OAS pension past age 65?

Deferring OAS increases your monthly payment by 0.6% for each month you delay, up to a maximum 36% increase at age 70. This can make sense if you have other income sources to cover expenses from 65 to 70 and expect to live into your early 80s or beyond — that's roughly the breakeven point. However, if your income between 65 and 70 will be high enough to trigger the clawback, deferral may let you collect OAS later when your income is lower, effectively avoiding the clawback altogether. Use the calculator above to compare scenarios.

How does the OAS clawback work?

The OAS recovery tax applies when your individual net income exceeds the annual threshold set by the CRA. For every dollar of income above this threshold, you repay 15 cents of OAS. Once your income reaches the upper threshold, your OAS is fully clawed back to zero. The clawback is applied through the tax system — either as a withholding on your OAS payments or as a balance owing on your tax return. Check the CRA for the current year's clawback thresholds.

What is the Guaranteed Income Supplement (GIS)?

The GIS is a non-taxable monthly benefit for low-income seniors who receive OAS. The amount depends on your marital status and your income (or combined couple income). You must reapply or have your eligibility reassessed each year based on your tax return. If you defer your OAS, you cannot receive GIS during the deferral period, which is an important consideration for lower-income retirees.

Can I receive OAS if I live outside Canada?

If you have at least 20 years of Canadian residency after age 18, you can receive OAS payments indefinitely while living abroad. With fewer than 20 years, your payments will stop 6 months after you leave Canada, unless the country you move to has a social security agreement with Canada. You must notify Service Canada if you leave the country. Non-resident tax withholding may apply to OAS payments sent abroad.

How do I apply for OAS?

Some people are automatically enrolled for OAS and receive a notification letter from Service Canada the month after they turn 64. If you are not automatically enrolled, you should apply up to 12 months before you want your pension to start. You can apply online through My Service Canada Account or by submitting the paper application form (ISP-3550). If you want to defer past 65, do not apply until you are ready to start receiving payments.

Updated March 2026. Information on this page is provided for educational purposes only. Tax rules, rates, and government programs may change — verify details with the CRA or a qualified financial advisor.